Motorcycle



FIG. 1 is a perspective view of a motorcycle showing my new design;

FIG. 2 is a right-side elevational view thereof;

FIG. 3 is a left-side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a back elevational view thereof. 

The ornamental design for a motorcycle, as shown. 